Add debugging for case loading issue

app.py

@@ -122,12 +122,16 @@ def get_available_datasets() -> List[str]:
     """Get list of available datasets."""
     # Get all available datasets
     all_datasets = dataset_manager.get_datasets()
+    print(f"All available datasets: {list(all_datasets.keys())}")
     
     # Filter to only show visible datasets from config
     visible_datasets = config_loader.get_visible_datasets()
+    print(f"Visible datasets from config: {visible_datasets}")
     
     # Return only datasets that are both available and visible
-    return [name for name in all_datasets.keys() if name in visible_datasets]
+    result = [name for name in all_datasets.keys() if name in visible_datasets]
+    print(f"Final available datasets: {result}")
+    return result
 
 
 def get_available_models() -> List[str]:
@@ -358,7 +362,9 @@ def create_interface():
                 
                 # Event handlers
                 def update_cases(dataset_name):
+                    print(f"update_cases called with dataset_name: {dataset_name}")
                     cases = get_cases_for_dataset(dataset_name)
+                    print(f"update_cases returning {len(cases)} cases")
                     return gr.Dropdown(choices=cases, value=cases[0] if cases else None)
                 
                 dataset_dropdown.change(